Merge PDF
Merge PDF files online for free.
or click to browse — up to 20 files
No files yet — add at least 2 PDFs to merge.
How to use this tool
Add your PDFs
Drag & drop up to 20 PDF files, or click to browse your device.
Arrange the order
Use the up/down arrows to reorder files, or remove ones you don't need.
Merge & download
Hit "Merge PDFs" and download your combined file instantly.
Frequently asked questions
Is there a file size limit?
Everything runs in your browser's memory, so very large jobs can slow things down. For best results keep the total under about 100 MB. There is no server-side limit because your files never leave your device.
Are my PDFs uploaded anywhere?
No. Merging happens 100% on your device using JavaScript. Your documents are never sent to a server, and nothing is stored after you close the page.
Can I reorder the files before merging?
Yes. Use the up and down arrows on each file to arrange them in exactly the order you want, or remove files with the × button. Pages are combined in the order shown.
Will merging change the quality of my PDFs?
No. Pages are copied losslessly into the new document — text, images and vector graphics keep their original quality.